US4694634A - Vacuum sealing device for insulated steam injection tubing - Google Patents

Vacuum sealing device for insulated steam injection tubing Download PDF

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Publication number
US4694634A
US4694634A US06/776,254 US77625485A US4694634A US 4694634 A US4694634 A US 4694634A US 77625485 A US77625485 A US 77625485A US 4694634 A US4694634 A US 4694634A
Authority
US
United States
Prior art keywords
plug
mounting plate
upper section
space
vacuum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/776,254
Other languages
English (en)
Inventor
Paul T. Anderson
Lawrence Irwin
John C. Matthews
Charles E. Paugh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Assigned to BABCOCK & WILCOX COMPANY, THE reassignment BABCOCK & WILCOX COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ANDERSON, PAUL T., IRWIN, LAWRENCE, MATTHEWS, JOHN C., PAUGH, CHARLES E.
Priority to US06/776,254 priority Critical patent/US4694634A/en
Priority to KR1019860004117A priority patent/KR870003277A/ko
Priority to CN86103825A priority patent/CN1010609B/zh
Priority to IN432/CAL/86A priority patent/IN164138B/en
Priority to CA000510987A priority patent/CA1240617A/en
Priority to MX3068A priority patent/MX161066A/es
Priority to BR8603210A priority patent/BR8603210A/pt
Priority to PH34090A priority patent/PH24548A/en
Priority to US06/897,181 priority patent/US4679378A/en
Priority to DE8686306590T priority patent/DE3675127D1/de
Priority to EP86306590A priority patent/EP0215591B1/en
Priority to AT86306590T priority patent/ATE57755T1/de
Priority to JP61209765A priority patent/JPS6267391A/ja
Publication of US4694634A publication Critical patent/US4694634A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
    • F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49249—Piston making
    • Y10T29/49256—Piston making with assembly or composite article making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49799—Providing transitory integral holding or handling portion

Definitions

  • the present invention relates, in general, to insulated steam injecting tubing and, in particular, to a new and useful device for sealing a port that communicates with an annular space between inner and outer tubines of the insulated steam injecting tubing, to maintain a vacuum in that space which was drawn through the port.
  • U.S. Pat. No. 4,396,211 to McStravick et al discloses an insulated tubular conduit for use in forming a tubing string in a subterranean well.
  • the conduit comprises inner and outer tubing with an annular cavity formed therebetween.
  • a fixture is provided for evacuating the gases from the annular cavity.
  • This fixture includes a clamp extending around the exterior of the outer tubing.
  • a passage extends radially through the fixture and communicates with an evacuation port in the outer tubing.
  • a plug such as a tapered pin, surrounded by an annular seal, can be inserted into this passage.
  • a vacuum hose connected to the fixture and communicating with the passage can be connected to a vacuum pump for drawing a vacuum from the annular cavity. After a suitable vacuum has been drawn, the pin which is a tapered pin, is driven into the vacuum part to close the annular cavity.
  • U.S. Pat. No. 1,472,019 to Hitch discloses a double walled receptacle in the form of a bottle having an outer shell and an inner shell wherein an air chamber is provided between the inner and outer shells.
  • a tapered air passage is formed in the outer shell.
  • a sleeve is clamped to the receptacle and provides a passageway and communication with the tapered air passage which, in turn, provides a passage for drawing air from the air chamber.
  • a driver bar fits within the sleeve passageway and a tapered plug is supported on the end of the driver bar. After an appropriate vacuum has been created in the chamber, the driver bar is struck with a tool to drive the plug into the tapered air passage to seal the chamber.
  • a similar device for sealing off a metal tank is disclosed in U.S. Pat. No. 2,032,862 to Wilkins.
  • a ram is used to force a sealing plug into a chamfered and slightly tapered opening in a tank.
  • An end of the ram carries a spring wire holder and over this holder, there is forced a plug.
  • the plug is drilled at the surface which contacts the ram.
  • the hole is of a size sufficiently small to permit the plug to be pressed tightly over the holder and to be securely attached thereto.
  • the present invention relates to a method and apparatus for sealing a port in the outer tubular of insulated steam injection tubing, after a vacuum has been established in an annular space between the inner and the outer tubulars comprising the insulated steam injection tubing.
  • the apparatus comprises a saddle clamp which includes an aperture that is aligned with the port and which houses a pin.
  • the pin is insertable in the part by means of a hydraulic press.
  • the aperture also includes a flow path for evacuation of the annular space wherein a vacuum in the annular space may be maintained during the process of inserting the pin.
  • the pin comprises a plug portion, a shank portion which cooperates with the press for driving the plug portion into the port and a tab portion connected to the plug and shank portions.
  • the end of the plug portion is tapered to a slightly smaller diameter than the body of the plug portion to aid in guiding the plug portion into the part.
  • a plug portion With a port diameter in the neighborhood of 0.4 to 0.5 inches, a plug portion has a diameter which is at least 0.003 inches greater than the port diameter (preferably on the order of 0.006 inches greater) to provide a satisfactory interference fit for a consistently satisfactory vacuum seal.
  • the tab portion has a sufficienty small diameter (on the order of 0.093 in.) so that the force from insertion of the plug portion in the port will break the tab portion.
  • an object of the present invention is to provide a method and apparatus which is capable of sealing the vacuum port for the annular space of an insulated steam injection tubing while maintaining a vacuum in the annular space.
  • a further object of the invention is to provide a vacuum sealing device for an insulated steam injection tubing which is simple in design, rugged in construction and economical to manufacture.
  • FIG. 1 is a sectional view taken through the inventive vacuum seal device and radially through an insulated steam injection tubing to which the device is connected;
  • FIG. 2 is a partial sectional view taken along the line 11--11 of FIG. 1;
  • FIG. 3 is an enlarged elevational view showing the plug assembly.
  • the invention embodied therein comprises a vacuum seal device generally designated 10 in FIG. 1 for drawing a vacuum from and sealing the annular space of an insulated steam injection tubing generally designated 1.
  • Tubing 1 includes an inner tube 2 and an outer tubular 3 which defines an annular space therebetween.
  • a port 4 is provided in the outer tubular 3 which communicates with the annular space.
  • the vacuum sealing device 10 includes an upper section 12 having a lower curved recess for engaging over the tubing 1, and a lower section 14 having an upper curved recess for engaging under the tubing 1. Sections 12 and 14 are bolted together by bolts 16. A sealing gasket 18 is provided in the curved recess of upper section 12 around the port 4 for establishing a seal with an interior space 20 of the upper section 12. Space 20 has a lower opening which communicates with port 4.
  • An observation passage 22 is also provided in upper section 12 which communicates with the space 20 and which receives a lens or viewing window 24 for viewing the space 20.
  • a connector 26 which is adopted for connection to a vacuum pump is threaded into another passage in upper section 12 which also communicates with space 20.
  • a further passage 28 is also provided for a vacuum sensing device which is capable of sensing the extent of vacuum in the space 20.
  • a first mounting plate 30 is fixed to upper section 12 and has an opening therethrough aligned with the space 20.
  • a flexible metal bellows 32 has its lower end connected to plate 30.
  • the upper end of bellows 32 is fixed to a second mounting plate 34, as shown in FIG. 1, which also has an opening therein that is aligned with the opening of plate 30 and with the space 20.
  • Second mounting plate 34 includes a plate portion 36 which is fixed thereto and which is firmly connected to the upper end of a pushing or centering rod 40.
  • Pushing rod 40 extends through the opening of plate 34, the opening of plate 30 and into space 20.
  • second mounting plate 34 can move donwwardly and upwardly with respect to first mounting plates 30 and the upper section 12.
  • a pair of guide rods 42 each extend through openings in plate 34,36 and have lower ends connected to the first mounting plate 30.
  • a stop nut 44 is threaded onto each rod 42 above plate portion 36 to limit the upward movement of second mounting plate 34.
  • a third mounting plate 46 is fixed to the top end of each rod 42 and is held fixed with respect to first mounting plate 30.
  • Third mounting plate 46 carries a piston and cylinder combination 48 which comprises a cylinder 50 having a space that can be pressurized through a connection 52, and a piston 54 movable in that space. Cylinder 50 is fixed to third mounting plate 46.
  • Piston 54 has a piston rod 56 which extends downwardly through an opening in plate 46 into engagement with plate portion 36. By pressurizing pressure connection 52, piston 54 and its piston rod 56 move downwardly to move second mounting plate 34 downwardly in turn compressing bellows 32 and moving pushing rod 40 downwardly.
  • a sealing pin generally designated 58 is fixed to the bottom end of pushing rod 40. As best shown in FIG. 3, sealing pin 58 has a lower plug 60 and an upper shank 65. Shank 65 is connected to plug 60 by a small diameter breakable tab 64. Plug 60 has a lower conical portion 62 and an upper cylindrical portion 63. The outer diameter of cylindrical portion 63 is slightly larger than the inner diameter of port 4 so that, with plug 60 fully seated in port 4, a good vacuum seal is established. The conical portion 62 is provided merely for guiding the plug 60 into port 4.
  • Pin 58 is held in a lower recess of pushing rod 40 by a set screw 67 which engages in a small diameter portion 66 of shank 65.
  • bellows 32 is first compressed by pushing plates 30 and 34 together either manually or through the aid of piston and cylinder combination 48. This extends, at least the conical portion 62 of plug 60, down through the lower opening of space 20 and beyond the curved recess of upper setion 12.
  • section 12 is placed over an insulated steam injection tubing 1 and the conical portion 62 of plug 60 is placed in port 4 of outer tubular 3.
  • Gasket 18 can previously be connected to the upper section for proper engagement around the port 4.
  • Bellows 32 can then be released which allows plate 34 to move away from plate 30 until this motion is stopped by nuts 44 on guide rod 42.
  • Lower section 14 is then engaged around the lower part of tubing 1 and bolted to the upper section using bolts 16.
  • a vacuum pump is connected to connector 26 and a vacuum detector is connected to passage 28.
  • the vacuum pump is operated until a satisfactory vacuum is achieved within the annular space between tubulars 2 and 3 of insulated steam injection tubing 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Pipe Accessories (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Thermal Insulation (AREA)
  • Gasket Seals (AREA)
  • Secondary Cells (AREA)
  • Insulators (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US06/776,254 1985-09-16 1985-09-16 Vacuum sealing device for insulated steam injection tubing Expired - Fee Related US4694634A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US06/776,254 US4694634A (en) 1985-09-16 1985-09-16 Vacuum sealing device for insulated steam injection tubing
KR1019860004117A KR870003277A (ko) 1985-09-16 1986-05-26 절연증기 주사튜브의 입구를 진공 밀봉시키는 방법과 그 장치
CN86103825A CN1010609B (zh) 1985-09-16 1986-06-05 隔热蒸汽喷射管的真空封闭装置
IN432/CAL/86A IN164138B (enrdf_load_stackoverflow) 1985-09-16 1986-06-06
CA000510987A CA1240617A (en) 1985-09-16 1986-06-06 Vacuum sealing device for insulated steam injection tubing
BR8603210A BR8603210A (pt) 1985-09-16 1986-07-09 Dispositivo e processo de vedacao a vacuo para tubulacao isolada de injecao de vapor
MX3068A MX161066A (es) 1985-09-16 1986-07-09 Mejoras en aparato obturador de sellado al vacio para tuberias de inyeccion de vapor aisladas
PH34090A PH24548A (en) 1985-09-16 1986-08-01 Vacuum sealing device for insulated staem injection tubing
US06/897,181 US4679378A (en) 1985-09-16 1986-08-15 Vacuum sealing device for insulated steam injection tubing
DE8686306590T DE3675127D1 (de) 1985-09-16 1986-08-26 Vakuumdichtungseinrichtung.
EP86306590A EP0215591B1 (en) 1985-09-16 1986-08-26 Vacuum sealing device
AT86306590T ATE57755T1 (de) 1985-09-16 1986-08-26 Vakuumdichtungseinrichtung.
JP61209765A JPS6267391A (ja) 1985-09-16 1986-09-08 管壁のポートを密封するための真空密封方法及び装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/776,254 US4694634A (en) 1985-09-16 1985-09-16 Vacuum sealing device for insulated steam injection tubing

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US06/897,181 Division US4679378A (en) 1985-09-16 1986-08-15 Vacuum sealing device for insulated steam injection tubing

Publications (1)

Publication Number Publication Date
US4694634A true US4694634A (en) 1987-09-22

Family

ID=25106884

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/776,254 Expired - Fee Related US4694634A (en) 1985-09-16 1985-09-16 Vacuum sealing device for insulated steam injection tubing

Country Status (12)

Country Link
US (1) US4694634A (enrdf_load_stackoverflow)
EP (1) EP0215591B1 (enrdf_load_stackoverflow)
JP (1) JPS6267391A (enrdf_load_stackoverflow)
KR (1) KR870003277A (enrdf_load_stackoverflow)
CN (1) CN1010609B (enrdf_load_stackoverflow)
AT (1) ATE57755T1 (enrdf_load_stackoverflow)
BR (1) BR8603210A (enrdf_load_stackoverflow)
CA (1) CA1240617A (enrdf_load_stackoverflow)
DE (1) DE3675127D1 (enrdf_load_stackoverflow)
IN (1) IN164138B (enrdf_load_stackoverflow)
MX (1) MX161066A (enrdf_load_stackoverflow)
PH (1) PH24548A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5046246A (en) * 1990-09-12 1991-09-10 Westinghouse Electric Corp. Securing machine parts together with the aid of connecting pins
EP0565786A1 (en) * 1992-04-13 1993-10-20 The Japan Steel Works, Ltd. Vacuum gate valve
US5625947A (en) * 1995-03-08 1997-05-06 Kimball Physics, Inc. Method for forming a vacuum port manifold
US20050223682A1 (en) * 2004-04-08 2005-10-13 Yi-Je Sung Vacuum sealer
US20170088778A1 (en) * 2014-05-21 2017-03-30 Thyssenkrupp Industrial Solutions Ag Adjusting device for actuating an element within a gas chamber through which a coke oven gas flows, and method for operating the adjusting device
CN110778564A (zh) * 2019-10-24 2020-02-11 中国科学院近代物理研究所 一种自动复位真空传动装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1061750C (zh) * 1997-08-13 2001-02-07 辽河石油勘探局机械修造集团公司 真空隔热油管及其制造工艺技术
KR101220107B1 (ko) * 2010-07-27 2013-01-11 국방과학연구소 등방압축성형을 위한 진공방법 및 그 장치
GB2574377A (en) 2018-05-29 2019-12-11 Acergy France SAS Sealing hollow structures
CN109595430B (zh) * 2019-01-09 2024-04-30 上海电缆研究所有限公司 一种用于真空套管的抽口装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032862A (en) * 1932-07-29 1936-03-03 Gen Electric Device for sealing-off metal tanks
US2700497A (en) * 1950-02-02 1955-01-25 Merck & Co Inc Bottle stoppering machine
US3924762A (en) * 1973-09-24 1975-12-09 Zinser Textilmaschinen Gmbh Apparatus for conveying and storing yarn packages or pirns

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU317306A1 (ru) * 1969-02-20 2000-05-10 Институт Физики Полупроводников Со Ан Ссср Вентиль
US3905396A (en) * 1972-10-02 1975-09-16 Ralph L Peterson Apparatus for moving a plug fitting
CH573563A5 (enrdf_load_stackoverflow) * 1973-11-22 1976-03-15 Balzers Patent Beteilig Ag

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032862A (en) * 1932-07-29 1936-03-03 Gen Electric Device for sealing-off metal tanks
US2700497A (en) * 1950-02-02 1955-01-25 Merck & Co Inc Bottle stoppering machine
US3924762A (en) * 1973-09-24 1975-12-09 Zinser Textilmaschinen Gmbh Apparatus for conveying and storing yarn packages or pirns

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5046246A (en) * 1990-09-12 1991-09-10 Westinghouse Electric Corp. Securing machine parts together with the aid of connecting pins
EP0565786A1 (en) * 1992-04-13 1993-10-20 The Japan Steel Works, Ltd. Vacuum gate valve
US5271602A (en) * 1992-04-13 1993-12-21 The Japan Steel Works Ltd. Vacuum gate valve
US5625947A (en) * 1995-03-08 1997-05-06 Kimball Physics, Inc. Method for forming a vacuum port manifold
US20050223682A1 (en) * 2004-04-08 2005-10-13 Yi-Je Sung Vacuum sealer
US20170088778A1 (en) * 2014-05-21 2017-03-30 Thyssenkrupp Industrial Solutions Ag Adjusting device for actuating an element within a gas chamber through which a coke oven gas flows, and method for operating the adjusting device
CN110778564A (zh) * 2019-10-24 2020-02-11 中国科学院近代物理研究所 一种自动复位真空传动装置
CN110778564B (zh) * 2019-10-24 2022-05-31 中国科学院近代物理研究所 一种自动复位真空传动装置

Also Published As

Publication number Publication date
EP0215591B1 (en) 1990-10-24
PH24548A (en) 1990-08-03
CN1010609B (zh) 1990-11-28
ATE57755T1 (de) 1990-11-15
JPS6267391A (ja) 1987-03-27
KR870003277A (ko) 1987-04-16
DE3675127D1 (de) 1990-11-29
BR8603210A (pt) 1987-04-22
JPH033119B2 (enrdf_load_stackoverflow) 1991-01-17
CN86103825A (zh) 1987-03-18
IN164138B (enrdf_load_stackoverflow) 1989-01-21
MX161066A (es) 1990-07-20
CA1240617A (en) 1988-08-16
EP0215591A1 (en) 1987-03-25

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